①Physiological/physical effects: Music can cause various physiological reactions, such as lowering blood pressure, slowing breathing, etc. Music can also produce significant analgesic effects. In addition, some studies have found that music can significantly increase the levels of immunoglobulins in the body.

②Interpersonal/social role: Music is a social non-verbal communication art form, and music activity itself is a social interaction activity. Music therapists provide patients with a safe and pleasant interpersonal environment by organizing various music activities, such as chorus, instrumental performance, dance, etc., so that they can gradually restore and maintain their social interaction abilities.

③Psychological/emotional effects: Music has a huge influence on people's emotions, so music has become a powerful weapon in the hands of music psychotherapists. When a person's mood changes, his view on the problem will also change. Music therapists use music's huge influence on emotions to change people's emotions through music, and ultimately change people's cognition.

④Aesthetic role: Music has the most direct and close relationship with people’s inner world. Music is purely a creation of the human mind and is not subject to any constraints of the objective reality world. It is the inner world of human beings. direct externalization. When human beings experience complete freedom and liberation in music, they also find the free essence of the human soul. "Beauty is the objectification of human essential power." If a person experiences beauty, he has experienced the essential power of his life. When a person transforms a traumatic experience into an experience of tragic beauty, the impact of the traumatic event will eventually be transformed into a very profound and positive life experience.